Add CMetroidAreaCollider

Former-commit-id: 71ff684be4

include/Kyoto/Math/CUnitVector3f.hpp

@@ -7,10 +7,22 @@
 
 class CUnitVector3f : public CVector3f {
 public:
-  CUnitVector3f(float x, float y, float z) : CVector3f(x, y, z) { Normalize(); }
+  enum ENormalize {
+    kN_No,
+    kN_Yes,
+  };
+  CUnitVector3f(float x, float y, float z, ENormalize normalize) : CVector3f(x, y, z) {
+    if (normalize == kN_Yes) {
+      Normalize();
+    }
+  }
   CUnitVector3f(const CVector3f& vec); // : CVector3f(vec) { Normalize(); }
   // TODO
 };
 CHECK_SIZEOF(CUnitVector3f, 0xc)
 
+inline CUnitVector3f operator-(const CUnitVector3f& vec) {
+  return CUnitVector3f(-vec.GetX(), -vec.GetY(), -vec.GetZ(), CUnitVector3f::kN_No);
+}
+
 #endif // _CUNITVECTOR3F